The specific heat of graphite: An evaluation of measurements

Abstract This paper reviews the measurements and evaluations of the specific heat at constant pressure for graphites in the temperature range 200 K to 3500 K. A polynomial fit to the data is made for use with nuclear graphite, valid over the range 250 K–3000 K. Some consideration is given to the difference between the specific heat at constant volume and at constant pressure. A measurement of the graphite phonon frequency spectrum at 1800 K is used to calculate the specific heat at constant volume, and then to modify slightly the polynomial fit to the constant pressure data.